Service parts for the DGAC
Grouped by system, with how many of each the parts manual calls for.
Oil system
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Fuel | 2-D Diesel |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 25 kW |
| Oil capacity | 8.5 L |
| Voltage options | 12 V |
| Phase | I,3 |
| Power factor | 0.8 |
| Battery group | 31 |
| Battery cranking | 625 CCA |
| Battery voltage | 12 V |
| Battery quantity | 1 |
| Coolant capacity | 16.8 L |
Filters & service parts
model family| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | ||||
| Fuel filter | — | 50 hr | |||
| Oil filter | Change Fuel Filter | 51592 | 200 hr | Amazon eBay FridayParts $15.89 | |
| Battery | — | ||||
| Belt | — | ||||
| Coolant | — | ||||
| Oil | — | 50 hr | |||
| Spark plug | — |
Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number.
Common questions
What is the power rating of the Cummins/Onan DGAC?
The Cummins/Onan DGAC is rated 25 kW standby.
What engine is in the Cummins/Onan DGAC?
The Cummins/Onan DGAC is powered by the 6A3.4 engine.
What kind of fuel does the Cummins/Onan DGAC run on?
The Cummins/Onan DGAC runs on 2-D Diesel.
What oil filter does the Cummins/Onan DGAC use?
The Cummins/Onan DGAC uses oil filter part number 51592.
Troubleshooting
6Symptoms & remedies
| Symptom | Remedy |
|---|---|
| PRE HI ENGINE TEMP lamp lights. Engine continues to operate. | 1. Green RUN lamp lights following engine start-up. 2. Indicates engine has begun to overheat and engine temperature has risen to approximately 202°F (94°C). If generator is powering non-critical and critical loads and cannot be shutdown, use the following: a. Reduce load if possible by turning off non-critical loads. b. Check air inlets and outlets and remove any obstructions to airflow. c. Open doors or windows in generator area to increase ventilation. If engine can be stopped, follow procedure in step 3. |
| HI ENG TEMP lamp lights. Engine shuts down. | 4. Indicates engine has overheated (engine temperature has risen above 222°F/106°C) or coolant level is low (sets with coolant level sensor). Allow engine to cool down completely before proceeding with the following checks: a. Check coolant level and replenish if low. Look for possible coolant leakage points and repair if necessary. b. Check for obstructions to cooling airflow and correct as necessary. c. Check for a slipping fan belt and tighten if loose. d. Reset control and restart after locating and correcting problem. Contact an authorized dealer or distributor if none of the above. |
| PRE LO OIL PRES lamp lights. Engine continues to operate. | 4. Indicates engine oil pressure has dropped to 20 psi (138 kPa). If generator is powering critical loads and cannot be shut down, wait until next shutdown period and then follow step 5 procedure. If engine can be stopped, follow procedures in step 5. |
| LO OIL PRES lamp lights. Engine shuts down. | 5. Indicates engine oil pressure has dropped to 14 psi (97 kPa). Check oil level, lines and filters. If oil system is okay but oil level is low, replenish. Reset control and restart. Contact an authorized dealer or distributor if oil pressure is not in the range of 30 to 55 psi (206 to 379 kPa). |
| OVERCRANK lamp lights and engine stops cranking. | 6. *12-Light Panel Only. Engine runs, shuts down, and LO OIL PRES lamp lights. |
| Engine runs and then shuts down, OVERSPEED lamp lights. | 7. *12-Light Panel Only. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing. Full Cummins/Onan DGAC troubleshooting guide (23 entries) →
Parts
4| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 193-0244 | Sender, Pressure - 0i1 | 1 | Sensor | Amazon eBay |
| 309-0169 | 1 Begin Spec G 25 26 | 1 | Service part / kit | Amazon eBay |
| 718-1067 | Screw. Hex Head | 1 | Service part / kit | Amazon eBay |
| 960-0135 | Service part / kit | Amazon eBay $19.00 |
Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.